On December 18, Professor Dr. Yong Poovorawan, head of the Center of Excellence in Clinical Virology at Chulalongkorn University, posted on Facebook about the prevalence of norovirus outbreaks during winter. Known for over 50 years, norovirus causes gastrointestinal symptoms such as nausea, vomiting, abdominal pain, and diarrhea, affecting individuals of all ages.
Dr. Yong highlighted key points:
- Winter Surges: Outbreaks are common in colder weather, often in schools, daycare centers, factories, and public gatherings.
- Genetic Variability: The virus’s genetic diversity means reinfection is possible, even after a previous illness.
- Treatment and Prevention: While norovirus generally does not cause fatalities, severe dehydration in vulnerable individuals can occur. There are no vaccines or antiviral treatments; care involves symptom management and rehydration. The virus is highly resistant to environmental conditions, and alcohol-based sanitizers are ineffective. Disinfectants containing chlorine, such as bleach, are essential for cleaning.
Preventative measures include maintaining good hygiene, consuming properly cooked food, and thorough cleaning of outbreak sites, especially high-touch surfaces and items like children’s diapers, which require careful disposal.
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